US8444324B2 - Wheel bearing for an aircraft landing gear - Google Patents

Wheel bearing for an aircraft landing gear Download PDF

Info

Publication number
US8444324B2
US8444324B2 US12/747,357 US74735708A US8444324B2 US 8444324 B2 US8444324 B2 US 8444324B2 US 74735708 A US74735708 A US 74735708A US 8444324 B2 US8444324 B2 US 8444324B2
Authority
US
United States
Prior art keywords
bearing
rim
outer housing
wheel bearing
friction bearings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/747,357
Other versions
US20100290731A1 (en
Inventor
Christian Proeschel
Robin Lang
Thorsten Dotzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOTZEL, THORSTEN, LANG, ROBIN, PROESCHEL, CHRISTIAN
Publication of US20100290731A1 publication Critical patent/US20100290731A1/en
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Application granted granted Critical
Publication of US8444324B2 publication Critical patent/US8444324B2/en
Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG MERGER AND CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: Schaeffler Technologies AG & Co. KG, SCHAEFFLER VERWALTUNGS 5 GMBH
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/08—Continuous flange rings; Arrangement of recesses enabling the flange rings to be slipped over the rim body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/14—Locking means for flange rings or seat rings
    • B60B25/20—Arrangement of screws, bolts, or shouldered pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface  wheeled type, e.g. multi-wheeled bogies
    • B64C25/36—Arrangements or adaptations of wheels, tyres or axles in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • F16C19/543—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact in O-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/56—Systems consisting of a plurality of bearings with rolling friction in which the rolling bodies of one bearing differ in diameter from those of another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/43—Aeroplanes; Helicopters

Definitions

  • the invention lies in the field of landing gear for aircraft, in particular for freight and commercial aircraft, and relates to a wheel bearing for an aircraft landing gear, with a rim which is mounted rotatably about an axis via a bearing arrangement.
  • the wheel bearing according to the invention comprises a rim which is mounted rotatably about an axis via a bearing arrangement having two anti-friction bearings, and a bearing outer housing which is designed as a single part and which contains the outer running surfaces of the anti-friction bearings, wherein an integral component of the bearing outer housing forms a part of the rim, and wherein the bearing outer housing is connected releasably to the rest of the rim.
  • a first essential aspect of the invention therefore consists in the outer races being jointly held by a single component, namely the single-part bearing outer housing, or being integrated in said component.
  • the bearing arrangement already experiences a considerable optimization with regard to the inherent weight thereof.
  • a further essential aspect of the invention consists in the rim being partially formed by the bearing outer housing, thus resulting in a further reduction in the number of components. This not only has an advantageous effect on the manufacturing costs, but also on the logistics and the stocking of replacement parts. In addition, the overall weight of the bearing arrangement is considerably optimized by the reduced number of components.
  • the unit formed by the rim and bearing outer housing can be installed and can be removed as a closed system and forms a system which is well sealed to the outside.
  • the bearing outer housing is arranged in that part of the bearing arrangement which is freely rotatable about the axis.
  • the running surfaces of the anti-friction bearings are integral components of the bearing outer housing.
  • the running surfaces or the bearing outer races can particularly preferably be composed directly of the material of the bearing outer housing. This further reduces the number of individual parts to be installed and the required logistics for the individual parts and replacement parts.
  • FIG. 1 shows a first wheel bearing according to the invention for an aircraft landing gear
  • FIG. 2 shows a second wheel bearing according to the invention.
  • FIG. 1 shows in longitudinal section the upper part of a wheel bearing 1 according to the invention of an aircraft landing gear (not illustrated specifically).
  • the wheel bearing comprises a rim 2 which is composed of a rim side part 3 , a rim central part 4 and a left rim outer part 5 which adjoins on the left and is only partially illustrated.
  • a tire (not illustrated) can be fitted onto the rim 2 in a manner known per se.
  • the rim parts 3 , 4 and 5 are connected releasably to one another by a plurality of axial screws 8 .
  • the rim 2 is mounted rotatably via a bearing arrangement 10 on a stub axle 11 of a hollow axle 12 (merely indicated).
  • the bearing arrangement comprises two anti-friction bearings 13 , 14 which, in the exemplary embodiment, are designed as tapered roller bearings.
  • the anti-friction bearings respectively comprise an inner race 16 , 17 which bears against a shoulder 18 on the stub axle 11 and is clamped via an axle nut 20 .
  • the tapered rollers 22 , 23 roll along the inner races of the respective running surfaces 24 , 25 .
  • the outer running surfaces 26 , 27 for the anti-friction elements (tapered rollers) 22 , 23 are particularly preferably formed integrally in a bearing outer housing 28 .
  • the bearing outer races here are not designed as separate parts but rather are directly formed by the material of the bearing outer housing 28 .
  • the bearing outer housing 28 together with the bearing outer races therefore forms the bearing part which is freely rotatable about the longitudinal axis 29 of the wheel bearing.
  • the bearing outer housing 28 has a radially outwardly extending extension 30 which is penetrated by the axial screw 8 and ends with an outer circumferential surface 32 in the interior region 33 of the tire (not illustrated).
  • the integral extension 30 and the circumferential surface 32 therefore form that part of the rim 2 which has already been referred to at the beginning as the rim central part 4 .
  • an additional subfunction namely as a rim component—is firstly assigned to the bearing outer housing 28 and secondly a particularly high degree of stability and a symmetrical load-bearing capacity of the bearing arrangement are implemented.
  • the compact configuration enables the rim together with the bearing outer housing to be configured in such a manner that it can easily be removed as a closed unit. This considerably increases the ease of maintenance, for example, while at the same time significantly reducing the weight of the overall constructional unit.
  • FIG. 2 shows an alternative configuration of a wheel bearing 1 ′ according to the invention.
  • the rim 2 ′ here comprises a right rim outer part 3 ′ which is connected via an axial screw 40 to the rest of the rim part 42 which adjoins on the left-hand side and is only partially illustrated.
  • the anti-friction bearings 13 ′, 14 ′ are configured with separate hearing outer races 44 , 45 which bear against corresponding stops or shoulders 48 , 49 of a hearing outer housing 50 .
  • the rim part 3 ′ is also an integral component of the bearing outer housing 50 here and is formed integrally from the material of the bearing outer housing 50 .
  • the bearing arrangement 10 ′ is fixed on the stub axle 11 ′ via an axle nut 20 ′, as already explained in conjunction with FIG. 1 .
  • a considerable portion of the rim 2 ′ is therefore formed by the extension 52 of the bearing outer housing 50 , said extension extending radially over the axial screw 40 and the circumferential surface 53 of said extension forming a boundary wall or boundary surface for the interior 54 of the tire (not illustrated here).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A wheel bearing for aircraft. The bearing has a long service life, is very reliable and consists of the lowest possible number of individual parts. The wheel bearing of an aircraft engine has a rim that is rotatably mounted about an axis by a bearing arrangement which has two rolling bearings. An outer bearing housing, designed as one piece, contains the outer running surfaces of the rolling bearings. An integral component of the outer bearing housing forms part of the rim and the outer bearing housing is detachably connected to the remainder of the rim.

Description

This application is a 371 of PCT/DE2008/002006 filed Dec. 2, 2008, which in turn claims the priority of DE 10 2007 059 587.7 filed Dec. 11, 2007, the priority of both applications is hereby claimed and both applications are incorporated by reference herein.
FIELD OF THE INVENTION
The invention lies in the field of landing gear for aircraft, in particular for freight and commercial aircraft, and relates to a wheel bearing for an aircraft landing gear, with a rim which is mounted rotatably about an axis via a bearing arrangement.
In this field of use, various, sometimes opposed optimization criteria have to be met. For example, landing gear of this type and therefore wheel bearings are loaded only briefly—but extremely highly in these phases—in relation to the overall operating period of the aircraft. During said phases, the wheel bearings have to operate with maximum reliability, and have to absorb extreme forces and torques—for example during the braking operation following the landing—and should nevertheless be as lightweight and as low maintenance as possible.
With regard to maintenance, in particular inspection of the bearings and brakes, it is desirable to be able to use standard bearings, but nevertheless to implement a high level of integration and to provide subassemblies which are as simple and as compact as possible.
Against this background, it is the object of the present invention to provide a wheel bearing for aircraft, said wheel bearing having a long service life and high reliability with the smallest possible number of individual parts and with a low inherent weight.
This object is achieved according to the invention by a wheel bearing having the features of patent claim 1.
According thereto, the wheel bearing according to the invention comprises a rim which is mounted rotatably about an axis via a bearing arrangement having two anti-friction bearings, and a bearing outer housing which is designed as a single part and which contains the outer running surfaces of the anti-friction bearings, wherein an integral component of the bearing outer housing forms a part of the rim, and wherein the bearing outer housing is connected releasably to the rest of the rim.
A first essential aspect of the invention therefore consists in the outer races being jointly held by a single component, namely the single-part bearing outer housing, or being integrated in said component. As a result, the bearing arrangement already experiences a considerable optimization with regard to the inherent weight thereof.
A further essential aspect of the invention consists in the rim being partially formed by the bearing outer housing, thus resulting in a further reduction in the number of components. This not only has an advantageous effect on the manufacturing costs, but also on the logistics and the stocking of replacement parts. In addition, the overall weight of the bearing arrangement is considerably optimized by the reduced number of components.
By means of the refinement according to the invention of the wheel bearing, a specific preload of the bearing can be implemented, in which case a particularly compact arrangement even having an enlarged bearing pitch circle is possible in a space-saving manner, and therefore the respective landing gear brake may be arranged in the direct vicinity of the bearing arrangement. In addition, the unit formed by the rim and bearing outer housing can be installed and can be removed as a closed system and forms a system which is well sealed to the outside.
According to an advantageous refinement of the invention, the bearing outer housing is arranged in that part of the bearing arrangement which is freely rotatable about the axis.
According to another advantageous refinement of the invention, the running surfaces of the anti-friction bearings are integral components of the bearing outer housing. For this purpose, the running surfaces or the bearing outer races can particularly preferably be composed directly of the material of the bearing outer housing. This further reduces the number of individual parts to be installed and the required logistics for the individual parts and replacement parts.
In terms of installation and for maintenance purposes, a development of the invention is advantageous, in which the integral component of the bearing outer housing forms a laterally accessible rim outer part.
Further aspects and advantages of the invention also emerge from the description below of the exemplary embodiments which are illustrated in the drawing, in which:
FIG. 1 shows a first wheel bearing according to the invention for an aircraft landing gear; and
FIG. 2 shows a second wheel bearing according to the invention.
In the figures, identical or functionally identical elements are provided with the same reference numbers.
FIG. 1 shows in longitudinal section the upper part of a wheel bearing 1 according to the invention of an aircraft landing gear (not illustrated specifically). The wheel bearing comprises a rim 2 which is composed of a rim side part 3, a rim central part 4 and a left rim outer part 5 which adjoins on the left and is only partially illustrated. A tire (not illustrated) can be fitted onto the rim 2 in a manner known per se. The rim parts 3, 4 and 5 are connected releasably to one another by a plurality of axial screws 8.
The rim 2 is mounted rotatably via a bearing arrangement 10 on a stub axle 11 of a hollow axle 12 (merely indicated). The bearing arrangement comprises two anti-friction bearings 13, 14 which, in the exemplary embodiment, are designed as tapered roller bearings. The anti-friction bearings respectively comprise an inner race 16, 17 which bears against a shoulder 18 on the stub axle 11 and is clamped via an axle nut 20. The tapered rollers 22, 23 roll along the inner races of the respective running surfaces 24, 25. In the exemplary embodiment according to FIG. 1, the outer running surfaces 26, 27 for the anti-friction elements (tapered rollers) 22, 23 are particularly preferably formed integrally in a bearing outer housing 28. In other words, the bearing outer races here are not designed as separate parts but rather are directly formed by the material of the bearing outer housing 28. The bearing outer housing 28 together with the bearing outer races therefore forms the bearing part which is freely rotatable about the longitudinal axis 29 of the wheel bearing.
The bearing outer housing 28 has a radially outwardly extending extension 30 which is penetrated by the axial screw 8 and ends with an outer circumferential surface 32 in the interior region 33 of the tire (not illustrated). The integral extension 30 and the circumferential surface 32 therefore form that part of the rim 2 which has already been referred to at the beginning as the rim central part 4.
With this configuration, an additional subfunction—namely as a rim component—is firstly assigned to the bearing outer housing 28 and secondly a particularly high degree of stability and a symmetrical load-bearing capacity of the bearing arrangement are implemented. The compact configuration enables the rim together with the bearing outer housing to be configured in such a manner that it can easily be removed as a closed unit. This considerably increases the ease of maintenance, for example, while at the same time significantly reducing the weight of the overall constructional unit.
FIG. 2 shows an alternative configuration of a wheel bearing 1′ according to the invention. In contrast to the embodiment according to FIG. 1, the rim 2′ here comprises a right rim outer part 3′ which is connected via an axial screw 40 to the rest of the rim part 42 which adjoins on the left-hand side and is only partially illustrated. As an alternative to the configuration according to FIG. 1, the anti-friction bearings 13′, 14′ are configured with separate hearing outer races 44, 45 which bear against corresponding stops or shoulders 48, 49 of a hearing outer housing 50. The rim part 3′ is also an integral component of the bearing outer housing 50 here and is formed integrally from the material of the bearing outer housing 50. The bearing arrangement 10′ is fixed on the stub axle 11′ via an axle nut 20′, as already explained in conjunction with FIG. 1.
In the configuration according to FIG. 2, a considerable portion of the rim 2′ is therefore formed by the extension 52 of the bearing outer housing 50, said extension extending radially over the axial screw 40 and the circumferential surface 53 of said extension forming a boundary wall or boundary surface for the interior 54 of the tire (not illustrated here).
LIST OF DESIGNATIONS
  • 1, 1′ Wheel bearing
  • 2, 2′ Rim
  • 3 Rim side part
  • 3′ Rim outer part
  • 4 Rim central part
  • 5 Rim outer part
  • 8 Axial screws
  • 10, 10′ Bearing arrangement
  • 11, 11′ Stub axle
  • 12 Axle
  • 13, 14 Anti-friction bearing
  • 13′, 14′ Anti-friction bearing
  • 16, 17 Inner race
  • 18 Shoulder
  • 20 Axle nut
  • 20′ Axle nut
  • 22, 23 Tapered rollers
  • 24, 25 Running surfaces
  • 26, 27 Outer running surfaces
  • 28 Bearing outer housing
  • 29 Longitudinal axis
  • 30 Extension
  • 32 Circumferential surface
  • 33 Interior region
  • 40 Axial screw
  • 42 Rim part
  • 44, 45 Bearing inner races
  • 48, 49 Stops/shoulders
  • 50 Bearing outer housing
  • 52 Extension
  • 53 Circumferential surface
  • 54 Interior

Claims (2)

The invention claimed is:
1. A wheel bearing for an aircraft landing gear, comprising:
a rim, which is mounted rotatably about an axis via a bearing arrangement, haying two anti-friction bearings;
a bearing outer housing which is designed as a single piece part, and outer running surfaces of the anti-friction bearings are directly formed on the bearing outer housing; and
two inner rings on which the two anti-friction bearings respectively roll, the inner rings configured to be mounted on an axle and clamped in series between an axle nut and a shoulder, the two anti-friction bearings each comprising tapered rollers,
wherein an integral component of the hearing outer housing forms a part of the rim, and the hearing outer housing is connected releasably to a rest of the rim,
the bearing outer housing having a radially outwardly extending projection that has a radially outer circumferential surface disposed so that the circumferential surface is in an interior of a tire that is finable onto the rim.
2. The wheel bearing of claim 1, wherein the bearing outer housing is arranged in a part of the bearing arrangement which is freely rotatable about the axis.
US12/747,357 2007-12-11 2008-12-02 Wheel bearing for an aircraft landing gear Expired - Fee Related US8444324B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007059587 2007-12-11
DE102007059587A DE102007059587A1 (en) 2007-12-11 2007-12-11 Wheel bearing of an aircraft landing gear
DE102007059587.7 2007-12-11
PCT/DE2008/002006 WO2009074134A1 (en) 2007-12-11 2008-12-02 Wheel bearing for an aircraft engine

Publications (2)

Publication Number Publication Date
US20100290731A1 US20100290731A1 (en) 2010-11-18
US8444324B2 true US8444324B2 (en) 2013-05-21

Family

ID=40577840

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/747,357 Expired - Fee Related US8444324B2 (en) 2007-12-11 2008-12-02 Wheel bearing for an aircraft landing gear

Country Status (5)

Country Link
US (1) US8444324B2 (en)
EP (1) EP2222972B1 (en)
CA (1) CA2722323C (en)
DE (1) DE102007059587A1 (en)
WO (1) WO2009074134A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100202719A1 (en) * 2007-09-06 2010-08-12 Schaeffler Technologies Gmbh & Co., Kg Wheel Bearing of an Aircraft Landing Gear
US20160031259A1 (en) * 2014-07-30 2016-02-04 Honeywell International Inc. Wheel hub bearing bore

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013186635A2 (en) 2012-05-02 2013-12-19 Borealis Technical Limited Aircraft wheel bearing arrangement
FR3056671B1 (en) * 2016-09-26 2018-10-12 Safran Landing Systems PROCESS FOR EQUIPPING A END TUBE WITH AN ADJUSTABLE END END THRUST
CN107972404A (en) * 2017-11-16 2018-05-01 西安航空制动科技有限公司 A kind of combined type Inspection Aircraft Wheels
CN107963203B (en) * 2017-11-16 2021-01-01 西安航空制动科技有限公司 A combined aviation wheel with wide hub core of aviation tire
CN107953721A (en) * 2017-11-16 2018-04-24 西安航空制动科技有限公司 The Inspection Aircraft Wheels that a kind of disc is combined with hub core
CN107953724B (en) * 2017-11-16 2020-02-07 西安航空制动科技有限公司 Combined aircraft wheel with movable wheel rim
CN107914515B (en) * 2017-11-16 2020-01-14 西安航空制动科技有限公司 Half-rim combined aircraft wheel
GB2587431A (en) 2019-09-30 2021-03-31 Airbus Operations Ltd Bearing unit for an aircraft wheel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623792A (en) * 1947-02-07 1952-12-30 Clark Equipment Co Wheel
GB764097A (en) 1953-09-28 1956-12-19 Bendix Aviat Corp Improvements in or relating to wheel and brake assemblies
US3836201A (en) * 1971-07-27 1974-09-17 Dunlop Ltd Wheel assemblies
US5086821A (en) 1990-01-23 1992-02-11 The B. F. Goodrich Company Aircraft wheel
US5409048A (en) 1993-07-13 1995-04-25 The B. F. Goodrich Company Aircraft wheel
JP2007315526A (en) 2006-05-26 2007-12-06 Ntn Corp Bearing device for wheel
US20100202719A1 (en) * 2007-09-06 2010-08-12 Schaeffler Technologies Gmbh & Co., Kg Wheel Bearing of an Aircraft Landing Gear

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623792A (en) * 1947-02-07 1952-12-30 Clark Equipment Co Wheel
GB764097A (en) 1953-09-28 1956-12-19 Bendix Aviat Corp Improvements in or relating to wheel and brake assemblies
US3836201A (en) * 1971-07-27 1974-09-17 Dunlop Ltd Wheel assemblies
US5086821A (en) 1990-01-23 1992-02-11 The B. F. Goodrich Company Aircraft wheel
US5409048A (en) 1993-07-13 1995-04-25 The B. F. Goodrich Company Aircraft wheel
JP2007315526A (en) 2006-05-26 2007-12-06 Ntn Corp Bearing device for wheel
US20100202719A1 (en) * 2007-09-06 2010-08-12 Schaeffler Technologies Gmbh & Co., Kg Wheel Bearing of an Aircraft Landing Gear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100202719A1 (en) * 2007-09-06 2010-08-12 Schaeffler Technologies Gmbh & Co., Kg Wheel Bearing of an Aircraft Landing Gear
US8992093B2 (en) * 2007-09-06 2015-03-31 Schaeffler Technologies AG & Co. KG Wheel bearing of an aircraft landing gear
US20160031259A1 (en) * 2014-07-30 2016-02-04 Honeywell International Inc. Wheel hub bearing bore
US10300740B2 (en) * 2014-07-30 2019-05-28 Honeywell International Inc. Wheel hub bearing bore

Also Published As

Publication number Publication date
CA2722323A1 (en) 2009-06-18
EP2222972B1 (en) 2013-03-13
CA2722323C (en) 2015-12-01
US20100290731A1 (en) 2010-11-18
EP2222972A1 (en) 2010-09-01
WO2009074134A1 (en) 2009-06-18
DE102007059587A1 (en) 2009-06-18

Similar Documents

Publication Publication Date Title
US8444324B2 (en) Wheel bearing for an aircraft landing gear
US20150071581A1 (en) Preassembled insertable roller bearing unit
US8388231B2 (en) Roller bearing, particularly for mounting the wheel of a commercial vehicle
US8490986B1 (en) Steering knuckle assembly having a kingpin
CA2553650A1 (en) Double-row rolling bearing
WO2007025975A3 (en) Angular ball bearing tandem comprising a seal on both end faces
EP2020309A3 (en) Axle bearing assembly
US8753018B2 (en) Wheel end support bearing
US20090108667A1 (en) Molded Wheel with Integral Hub
US9533708B2 (en) Bearing device having at least one kingpin
WO2004022991A1 (en) Rolling bearing unit for supporting wheel
US20160341303A1 (en) Stepped planetary gear with inner bearing
CN104595356A (en) Bearing structure for axle
US20150211578A1 (en) Bearing Arrangement
US20030218309A1 (en) Vehicle wheel end having integrated knuckle and outer race
CN102602245A (en) Wheel rolling bearing device
US9010874B2 (en) Wheel bearing design
JP2007315526A (en) Bearing device for wheel
CN206972760U (en) Energy-saving commercial automotive wheel rolling bearing
CN106089994A (en) A kind of footpath axial composite-rotor deep-groove ball thrust ball bearing
CN105209772A (en) Bearing units and bearings for bevel gear shafts
JP2011111077A (en) Grease holding structure of bearing
CN106884855B (en) A kind of balance shaft and vehicle
CN103991333B (en) Bicycle hub
CN110439923A (en) A kind of three column combination bearings

Legal Events

Date Code Title Description
AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PROESCHEL, CHRISTIAN;LANG, ROBIN;DOTZEL, THORSTEN;REEL/FRAME:024517/0505

Effective date: 20100520

AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SCHAEFFLER TECHNOLOGIES GMBH & CO. KG;REEL/FRAME:028533/0036

Effective date: 20120119

AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, GERMANY

Free format text: MERGER AND CHANGE OF NAME;ASSIGNORS:SCHAEFFLER TECHNOLOGIES AG & CO. KG;SCHAEFFLER VERWALTUNGS 5 GMBH;REEL/FRAME:037732/0228

Effective date: 20131231

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SCHAEFFLER TECHNOLOGIES GMBH & CO. KG;REEL/FRAME:037732/0347

Effective date: 20150101

AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258;ASSIGNOR:SCHAEFFLER TECHNOLOGIES GMBH & CO. KG;REEL/FRAME:040404/0530

Effective date: 20150101

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20170521